Eaton Cutler-Hammer KD3125W 125 Amp Molded Case Circuit Breaker – 3 Pole – 65 kAIC at 240 Vac / 35 kAIC at 480 Vac – Series C

The Eaton Cutler-Hammer KD3125W is a Series C molded case circuit breaker featuring a K-frame design and a 125 A current rating. This three-pole breaker supports systems rated up to 600 Vac and 250 Vdc, with an interrupting capacity of 65 kAIC at 240 Vac and 35 kAIC at 480 Vac. It uses fixed thermal and fixed magnetic trip protection, with interchangeable long-time (L) and instantaneous (I) trip functions. The breaker features aluminum line- and load-side lug terminals, a feed-through connection configuration, and a standard interrupting capacity design for electrical distribution applications.

Specifications

• Manufacturer: Eaton
• Brand: Cutler-Hammer
• Product Type: Molded Case Circuit Breaker (MCCB)
• Product Series: Series C
• Frame Type: K Frame
• Breaker Type: KD
• Breaker Configuration: Complete Breaker
• Current Rating: 125 A
• Number of Poles: 3 Pole
• AC Voltage Rating: 600 Vac
• DC Voltage Rating: 250 Vdc
• Interrupting Capacity at 240 Vac: 65 kAIC
• Interrupting Capacity at 480 Vac: 35 kAIC
• Trip Type: Fixed thermal, fixed magnetic
• Trip Functions: Interchangeable long-time (L) and instantaneous (I)
• Terminal Material: Aluminum
• Terminal Type: Line- and load-side lug terminals
• Connection Type: Feed-through
• Interrupting Capacity Class: Standard
• Operating Temperature: 40°C
• Model Number: KD3125W

Part Numbers & Identification

• Manufacturer: Eaton
• Brand: Cutler-Hammer
• Catalog Number: KD3125W
• Product Family: Series C
• Frame Designation: K Frame
• Breaker Type: KD
• Current Rating: 125 Amp
• Pole Count: 3 Pole
• Trip Mechanism: Fixed thermal and fixed magnetic
• Trip Functions: Interchangeable LI (Long-Time and Instantaneous)
• Product Category: Molded Case Circuit Breaker (MCCB)
• UPC:195125049727 

Compatibility

Designed for compatible Eaton Cutler-Hammer Series C K-frame electrical distribution systems requiring a three-pole, 125 A circuit breaker with matching voltage ratings, interrupting capacity, and trip-function requirements.

Certifications

• UL Listed

Returns are easy

You may return items within 10 days of delivery for a refund.

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